Draft-regulator



J. 0. ANDERSON. DRAFT REGULATOR.

APPLICATION FILED OCT. 8. 1919.

Patented June 1, 1920.

9 wve/wto'c Q2/7762; 0. 24/706/50/7 1 5 atto'aue I UNITED STATES.

JAMES O. ANDERSON, OF EUGENE, OREGON DRAFT-REGULATOR.

Specification of Letters Patent.

Patented June 1, 192d Application filed October 8, 1919. Serial No. 329,395.

7 To all whom it may concern.

Be it known thatI, JAMES O. ANDERSON,

a citizen of the United States, residing at Eugene, in the county of Lane and State of Ore on, have invented certain new and useful mprovements in Draft-Regulators, of

which the following is a specification.

This invention relates to draft regulating devices and is adapted, more especially, for controllin chimney ases from retorts or smelting rnaces alt ough it may advanta eously be used in other applications.

he objects of the invention are, first, to

provide an eflicient chimney. damper where-. in is employed water for the draft regulating medium; and, second, the provision of means which will serve automatically to regulate such liquid damper for the purpose of affording a substantially uniform flue opening under normal operating conditions.

A further object is to provide damper devices of this character which maybe inexpensively installed and be reliable and effective in operation.

These objects are accomplished by means of apparatus which will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevational view, partly in vertical section showing anembodiment of my invention. Figs. 2 and 3 are sectional detail views, to an enlarged scale, of the automatic water-level regulating valve, shown in different positions.

In said drawings, the reference numeral 5 designates a retort or other vessel from which gaseous products are discharged through a stack or flue, indicated as a whole by 6. Said flue is shown in Fig. 1 w1th an inclined central portion, an upper portion 8 of a substantially semicircular form and terminates in a downwardly directed outlet end 9 which is disposed in a horizontal plane, or nearly so.

Such curved extremity of the flue extends into a tank 10 which constitutes with the above described flue the gas or smoke stack.

Said tank is of greater diameter than the flue, is open at thetop and is desirably provided with a funnel shaped bottom 11 connected at its lowest part with a sediment collecting pipe 12 provided with a draw-off cock 13.

The tank 10 has connected thereto a service pipe line 14' leading from a source of water supply. Included in said pipe line for shutting of the water supply is a valve 15 and between the latter and the tank is a valve 1'5 by which water may be drawn from theit'ank. 16-16 represents a by-pass sides of the two valves, and is rovided with a manually controlled shut-o also with a three-way valve, denoted generconnection between the pipe line at opposite valve 17 and v ally by 18. This three-way valve, as shown in Figs. 2 and 3, consists of a valve proper 1'9 rotatable in the bore of a casing 20 having at diametrically opposite sides connections with the by-pass parts 16 and 16 and at right'angles therewith an outlet connected to a waste'pipe 21. The valve 19 is provlded, as shown, with a T-shaped passage 19 which by suitably rotating the valveopens communication, as in Fig. 3, for the passage of water through the by-pass and pipe line into tank 10; or into position ('Fig.

2) to afford an outlet for the water from the tank. The valve 19 is provided with a lever handle 22 which, as shown in Fig. 1,

is engageable by attachments 23 or 23 upon a cable 24 guided by pulleys 25 and connected ntlp a sheave 26 which is located above said Instead of usingcable attachments as referred to above, the cable 24. ma be connected, as 2 and, 3, direct y to a lever arm .22 b which the valve 19 is operated, and emp oying a counter weight 30 on the other arm of the lever to act in opposition to'the weight of a body 28 hereinafter referred to. A second cable 27 wound about the sheave axle 26 is connected to body 28 which floats in the water W obtaining in the tank so that when the water descends the weight of the body28 will act in an obvious manner to rotate the valve 19 into a position as shown in Fig. 3 to admit water into the tank. As the body 28 ascends with the rising of water in the tank, a pendent weight 29, Fig. 1, upon cable 26, or a counter weight 30 in FlgS. 2 and 3, asserts its occur when. the level of the water W is at a' power to-efl'ect the closing of the valve 19 to stop the flow of water when it reaches a predetermined level suitable for normal operations.

The valve 19 by bei1 operable through the instrum'entality of a ody floating in the liquid-damper will be responsive to changes in the level of the water, and which may be regulated relative to the plane of the flue outlet end 9 by regulating the connection between the cable 24 and valve- 19.

The water level in the tank may also be manually controlled, after shutting ofl valve 17, by means of valves14 and 15 as, for example, for lowering the water level when starting operations by affording more space between the flue outlet and the water for the purpose of increasing draft; or, where the draft is to be lessened or entirely overcome, the water level should be raised into proximity of 'or to be. in contact with the flue outlet.

To enable the apparatusbeing again automatically regulated, the valves 1 1 and 15 are closed and the valve 17 opened, whereupon the three-way valve becomes operative and is caused 'to be brought into Figs. 2 or 3 pobylmeans of cable 24 to indicate the level of the water within the tank. I

In operation, the gaseous products of combustionor which result from the roasting or smelting of metallic ores or the like are caused by a natural draft or otherwise to ascend through the flue .6 to escape through thedischarge end 9 into the external atmosphere.

By increasing or diminishing the effective opening of such discharge end or'more particularly in this instance the opening under the periphery of the discharge end, it isapparent that the draft will respectivelybe increased to its maximum extent which will distance equal to one fourth of the diameter of said discharge end, and the draft will be lessened to nothing by raising of the water level to the 'dischargeend of the flue.

By my improved means for governing the elevation of thelevel of the water damper I produce apparatus capable of regulating the iarly valuable in metallurgy for the recovcry of mercury or the like from gases or volatile particles which are separated from other material in the ore.

For which purpose the use of the inclined flue 6 with a discharge extremityof an inverted U-shape which directs the gases, etc., against a water surface and affords efi'ective means to save nearly all of the values which hitherto it has been impossible to retain in vertical flues from which escape the gaseous products at a high .temperature.

The construction, operation and advantages of my invention will, it is thought, be

apparent from the foregoing description.

What I claim is- 1. In an apparatus of the clam described,

into and withdrawing the same from the container, said pipe being connected with a T source of water supply, a three-way valve included in said pipe, said valve having a waste outlet, and means actuated by the water level in said container for operating said valve to regulate the levelof the water in said container with respect .tothe flue outlet.

3. In apparatus of theclass; described, a water container, a flue havin icoits outlet ex- H tend downwardly into sai container,- a

single pipe line connected to said container,

valves provided in said pipe line lwhereby in to be at a selected elevation for. varying the effective opening .of the flue outlet, and 1 ;water level in. said container whereby the -water level is automatically retained at a distance from the flue outletto-maihtain a substantially uniform draft opening thereat. 4. In apparatus of theclass described,the' its discharge end of an inverted .U-shape w1th a means regulated by the elevation of the combination of an inclined 'flueshavin 'water is supplied ,to and withdrawn 'from said container to cause the .waterlevel there:

downwardly directed extremity, a watercontainer into which said flue end extends, said container being of greater diameter than said flue discharge, 'means for admitting water into and-discharging the same from in said container for regulating said'means.

said container and devices actuatedv "by changes of the elevation of the water level 125- 5. In apparatus of the class described, a'-

water container having a s1oping.bottom,-a sediment collecting vessel connected thereto; a valve outlet therefor, a flue having an inclined portion andan outlet portion, said outlet portion extending. into said container Signed at Seattle, Washington, this 1st 4 and having its discharge extremity located day of October, 1919.

a short distance above the bottom of said JAMES O. ANDERSON. container, means for supplying water to said container, and means to Withdraw Water. \Vitnesses:

, from the container through the aforesaid PIERRE BARNES,

means or said vessel selectively. MoNoRIEFFE CAMERON. 

